摘要
为解决油田勘探开发后期薄层评价需求与测井仪器纵向分辨率低的矛盾,需要开发统一分辨率达到0.2m的高分辨率测井系列,尤其是作为主力装备的高分辨率双侧向测井仪器。采用数字聚焦技术实现高分辨率双侧向测量,通过数值模拟技术与电路仿真技术相结合的方法,研究0.2m高分辨率双侧向测井仪器的探测特性与不同地层条件下的测量信号幅度,指导仪器实现。设计的双侧向测井仪器纵向分辨率达到0.2m,深浅侧向的探测深度分别达到1.45m和0.46m,该仪器在高阻层(20000Ω·m)的信号幅度低至微伏级,对测量电路提出了更高的要求。根据数值模拟与电路仿真结果,开发的0.2m高分辨率双侧向测井仪器在大庆油田和吉林油田已经应用300多口井,为薄层及薄互层评价提供了可信的资料。
In order to solve the contradiction between the requirement of thin layer evaluation and low vertical resolution of logging tools in the later stage of oil field exploration and development,it is necessary to develop high resolution logging tools with uniform resolution up to 0.2 m,especially the dual laterolog tool as the main equipment.High resolution dual laterolog is realized by digital focusing technology.The detection characteristics of 0.2 m high resolution dual laterolog and the measured signal amplitude under different formation conditions are studied by combining numerical simulation technology with circuit simulation technology to guide the realization of the instrument.Results show that the vertical resolution of the designed dual laterolog tool is 0.2 m,the investigation depth of deep and shallow laterolog is 1.45 m and 0.46 m,respectively.The signal amplitude of the tool in high resistivity layer (2 0000Ω·m) is low to microvolt level,which puts forward higher requirements for measuring circuit.According to the results of numerical simulation and circuit simulation,the developed 0.2 m high resolution dual laterolog tool has been applied in more than 300 wells in Daqing Oilfield and Jilin Oilfield,providing credible information for thin layer evaluation.
作者
童茂松
张加举
丁柱
TONG Maosong;ZHANG Jiaju;DING Zhu(China Petroleum Logging Co.Ltd.,Daqing Branch,Daqing,Heilongjiang 163412,China)
出处
《石油管材与仪器》
2019年第4期19-22,共4页
Petroleum Tubular Goods & Instruments
基金
大庆油田有限责任公司重大科技专项“0.2 m高分辨率水淹层测井技术研究”(项目编号:dqc-2012-cs-ky-003)
关键词
0.2m高分辨率双侧向测井
数值模拟
电路仿真
数字聚焦
0.2m-vertical-resolution dual laterolog
numeric simulation
circuit simulation
digital focusing
